Patents by Inventor Hidetaka Kira

Hidetaka Kira has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of grinding an axially asymmetric aspherical mirror
    Patent number: 6537138
    Abstract: An electrolytic in-process dressing device 10 is provided with a disk-shaped metal-bonded grindstone 2 with a surface 2a with a circular arc shape with a radius R at its outer periphery and a numerical control device 16. The disk-shaped metal-bonded grindstone 2 rotates around an axis Y, and the grindstone is dressed electrolytically while the device 10 grinds the workpiece 1. The numerical control device 16 is provided with a rotary truing device 12 that rotates around the X axis that orthogonally crosses the axis of rotation Y and trues the circular arc surface 2a, a shape measuring device 14 for measuring the shape of the circular arc surface of the grindstone and the shape of the processed surface of workpiece 1 on the machine, and controls the grindstone numerically in the three directions along the axes X, Y and Z. The numerical control device 16 moves the grindstone in three axial directions and repeats the operations of truing, grinding and measurements on-line.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: March 25, 2003
    Assignees: Riken, Shimadzu Corporation
    Inventors: Hitoshi Ohmori, Yutaka Yamagata, Sei Moriyasu, Shinya Morita, Katsuhiko Kada, Hidetaka Kira, Hiroyuki Sasai, Masaru Kawata
  • Method of grinding an axially asymmetric aspherical mirror
    Publication number: 20010024934
    Abstract: An electrolytic in-process dressing device 10 is provided with a disk-shaped metal-bonded grindstone 2 with a surface 2a with a circular arc shape with a radius R at its outer periphery and a numerical control device 16. The disk-shaped metal-bonded grindstone 2 rotates around an axis Y, and the grindstone is dressed electrolytically while the device 10 grinds the workpiece 1. The numerical control device 16 is provided with a rotary truing device 12 that rotates around the X axis that orthogonally crosses the axis of rotation Y and trues the circular arc surface 2a, a shape measuring device 14 for measuring the shape of the circular arc surface of the grindstone and the shape of the processed surface of workpiece 1 on the machine, and controls the grindstone numerically in the three directions along the axes X, Y and Z. The numerical control device 16 moves the grindstone in three axial directions and repeats the operations of truing, grinding and measurements on-line.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 27, 2001
    Inventors: Hitoshi Ohmori, Yutaka Yamagata, Sei Moriyasu, Shinya Morita, Katsuhiko Kada, Hidetaka Kira, Hiroyuki Sasai, Masaru Kawata